Hey this is an urban Legend that I cooked up due to a real experience that happened to my brother itgoes like this:

An 18 year old guy gets off work one night to find a high school couple waiting at his car. The girl is cold and clutching her sweetheart's black letterman's jacket. The couple needs a ride back to their car because they got in a crash and had to walk the long walk back to town to call a tow truck. So the worker (let's call him Ben) agrees to take them back. They drive along 522 and at mile marker 119 the couple ask to be let out. Ben sees no sign of a car but he figures they could just have snuck out and needed a ride back close to home, so he lets them out. The next day Ben's at home watching the news when he hears that two serial killers had commited a murder at Ben's work. He runs out to his car and pops the trunk, to find a bag. He already has an idea of what's in it. He drives back to 522, back toward mile marker 119 when he sees a letterman's jacket lying on the road. But it's too late. He runs over it, and for some odd reason it causes his car to skid off the road, into the forest. In the forest he sees a crashed car that he's rapidly approaching, and right before his fatal impact he sees the couple in the car, dead as doornails.

the bag part is fictional but the inkling is that the body of the person killed is in the bag and the couple were the ones that put it in the trunk before he got off work, which is why they were waiting by the car.

oooo forgive me (newbie :-/ ) I got a little confused, I kinda thought that it would turn out that the couple were just ghosts! The body in the trunk threw me off! So umm were they ghosts, killers or killer ghosts ???? Hey I admitted, I'M A NEWBIE :

"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense." Buddha (563BC-483BC )

So, basically what your saying is that these two people killed a bunch of other people, hitchhiked a ride with 'Ben' to their car, and the couple, in turn, smashed into a tree?Or maybe it's because 'Ben' saw these people, and they knew he'd be able to identify them for whatever reason, and when he drove over the jacket and ran into the tree, he was the last one to be killed. But if the couple was already dead.......doesn't sound much like an urban legend. Sounds like the beginning (middle or end) to a bad horror movie. But that's just me.